Old IE CSS per-property hacks — a reminder

ie.css

.ie {
  display: none;
}

.ie9 {
  display: block\9;
  display: none/;
}

.ie8 {
  display: block/;
  *display: none;
}

.ie7 {
  *display: block;
  _display: none;
}

.ie6 {
  _display: block;
}